crashpad/util/linux/direct_ptrace_connection.cc
Joshua Peraza 0924e56751 linux: Add PtraceBroker and PtraceClient
A PtraceBroker/Client pair implement a PtraceConnection over a socket.
The broker runs in a process with `ptrace` capabilities for the target
process and serves requests for the client over a socket.

Bug: crashpad:30
Change-Id: Ied19bcedf84b46c8f68440fd1c284b2126470e5e
Reviewed-on: https://chromium-review.googlesource.com/780397
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2017-12-11 18:35:24 +00:00

67 lines
1.8 KiB
C++

// Copyright 2017 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/linux/direct_ptrace_connection.h"
#include <utility>
namespace crashpad {
DirectPtraceConnection::DirectPtraceConnection()
: PtraceConnection(),
attachments_(),
pid_(-1),
ptracer_(/* can_log= */ true),
initialized_() {}
DirectPtraceConnection::~DirectPtraceConnection() {}
bool DirectPtraceConnection::Initialize(pid_t pid) {
INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
if (!Attach(pid) || !ptracer_.Initialize(pid)) {
return false;
}
pid_ = pid;
INITIALIZATION_STATE_SET_VALID(initialized_);
return true;
}
pid_t DirectPtraceConnection::GetProcessID() {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return pid_;
}
bool DirectPtraceConnection::Attach(pid_t tid) {
std::unique_ptr<ScopedPtraceAttach> attach(new ScopedPtraceAttach);
if (!attach->ResetAttach(tid)) {
return false;
}
attachments_.push_back(std::move(attach));
return true;
}
bool DirectPtraceConnection::Is64Bit() {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return ptracer_.Is64Bit();
}
bool DirectPtraceConnection::GetThreadInfo(pid_t tid, ThreadInfo* info) {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return ptracer_.GetThreadInfo(tid, info);
}
} // namespace crashpad